CN110359379A - Damaged bridge pier mixed reinforcement structure based on marmem and carbon cloth - Google Patents
Damaged bridge pier mixed reinforcement structure based on marmem and carbon cloth Download PDFInfo
- Publication number
- CN110359379A CN110359379A CN201910696402.2A CN201910696402A CN110359379A CN 110359379 A CN110359379 A CN 110359379A CN 201910696402 A CN201910696402 A CN 201910696402A CN 110359379 A CN110359379 A CN 110359379A
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- China
- Prior art keywords
- bridge pier
- carbon cloth
- damaged bridge
- damaged
- alloy wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000004744 fabric Substances 0.000 title claims abstract description 37
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 35
- 230000002787 reinforcement Effects 0.000 title claims abstract description 14
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000004567 concrete Substances 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 238000010276 construction Methods 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 9
- 230000005284 excitation Effects 0.000 claims abstract description 8
- 239000003822 epoxy resin Substances 0.000 claims abstract description 7
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 7
- 239000004568 cement Substances 0.000 claims abstract description 6
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 6
- 230000003213 activating effect Effects 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 230000003446 memory effect Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The damaged bridge pier mixed reinforcement structure based on marmem and carbon cloth that the invention discloses a kind of, including being broken the sleeve extruding connector of reinforcing bar in damaged bridge pier and for replacing the concrete for filling up loose around damaged bridge pier and repairing the accelerated cement base mortar of damaged bridge pier surface crack for connecting, the pier shaft surface of damaged bridge pier is disposed with epoxy resin layer and carbon cloth from inside to outside, the bottom of damaged bridge pier is fixed with the steel plate press strip for compressing carbon cloth, the outer surface of carbon cloth is wound with NiTiNb shape-memory alloy wire, in construction, NiTiNb shape-memory alloy wire is connected with the external thermal excitation power-supply device of the shape memory effect for activating NiTiNb shape-memory alloy wire, the ruggedized construction can combine realization shake by active constraint power with passive bound power The reinforcing of bridge pier is damaged, and cost is relatively low, durability is preferable.
Description
Technical field
The invention belongs to Reinforcement of Engineering Structure technical fields, are related to a kind of shake based on marmem and carbon cloth
Damage bridge pier mixed reinforcement structure.
Background technique
Since the 1950s, the features such as reinforced concrete structure is firm durable, fire protecting performance is good with its, is in China
It is widely used in science of bridge building.But with the passage of active time, the influence of environment, even selection is preferable, sets
Meter rationally, the bridge that guarantees of construction quality also can continuous aging, generating various diseases, such as to reveal muscle, pitted skin, surface layer blocking
It falls off etc., making the security performance of structure, there are hidden danger.Especially under geological process, bridge pier once occurs to destroy to will cause greatly
The economic loss of amount even generates serious life security and threatens.Reinforced concrete bridge pier is being held as a kind of ductile reinforced member
It can be consumed energy, therefore how damaged bridge pier be added by the bending deformation of its plastic hinge region by when biggish earthquake load
Gu becoming to be even more important.
Sidewise restraint can improve Brittleness of Concrete, improve the intensity and deformability of reinforced concrete member.Concrete is about
Shu Fangfa is divided into actively and passively two kinds.For concrete active constraint, sidewise restraint is just with pre- before axial compressive force effect
The form of pressure is applied on structural elements.And for passive bound, knot of the restraining force as concrete compression lateral expansion
Fruit and be applied on component indirectly.But existing active constraint and the equal existing defects of passive bound means: for passively about
Beam, to be " activated " passive bound effect completely, concrete will unavoidably generate a degree of damage.For actively about
Beam, currently, reinforcing most common material for concrete active constraint is steel (compressor wire, prestress wire and pre-
Stress steel plate hoop) and fibre reinforced composites (FRP).But steel are easy to happen corrosion, and durability is poor.FRP need to use asphalt mixtures modified by epoxy resin
Rouge layer is pasted onto component surface as adhesive, there is the danger fallen off.In addition, these two types of prestressed applications of material all need
By Special tension equipment, excessive human and material resources and financial resources can be expended.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, provide a kind of based on marmem and carbon
The damaged bridge pier mixed reinforcement structure of fiber cloth, the ruggedized construction can combine reality with passive bound power by active constraint power
The reinforcing of existing damaged bridge pier, and cost is relatively low, durability is preferable.
In order to achieve the above objectives, of the present invention to be added based on the mixing of the damaged bridge pier of marmem and carbon cloth
Fixing structure includes being broken the sleeve extruding connector of reinforcing bar in damaged bridge pier for connecting and filling up damaged bridge pier week for replacing
The accelerated cement base mortar of loose concrete and the damaged bridge pier surface crack of reparation is enclosed, the pier shaft surface of damaged bridge pier is by interior
To epoxy resin layer and carbon cloth is disposed with outside, the bottom of damaged bridge pier is fixed with the steel plate for compressing carbon cloth
Press strip, the outer surface of carbon cloth are wound with NiTiNb shape-memory alloy wire, in construction, NiTiNb shape-memory alloy wire
It is connected with the external thermal excitation power-supply device of the shape memory effect for activating NiTiNb shape-memory alloy wire.
Carbon cloth is from the outer wall that the bottom end of damaged bridge pier is wound in damaged bridge pier axially upward, and carbon cloth
Winding height is the 1/3 of damaged bridge pier height.
Steel plate press strip is fixed by bolts in the bottom of damaged bridge pier.
NiTiNb shape-memory alloy wire is helically wound around the outside of carbon cloth with 40 millimeters of spacing.
The invention has the following advantages:
Damaged bridge pier mixed reinforcement structure of the present invention based on marmem and carbon cloth is specifically being grasped
When making, it is provided with carbon cloth and NiTiNb shape-memory alloy wire on the outside of damaged bridge pier, is provided by carbon cloth
The active constraint power that passive bound power and NiTiNb shape-memory alloy wire provide organically combines, to restore and improve damaged bridge pier
Anti-side rigidity and ductility, simple structure, easy construction, can effectively overcome traditional active constraint reinforcement means prestress application to walk
The defects of rapid cumbersome, pre-stress construction is mechanical heavy and loss of prestress is serious, and effectively promote engineering structure quality and construction
Speed, and cost is relatively low, durability is preferable.In addition, it is necessary to explanation, NiTiNb shape-memory alloy wire can provide permanent steady
Fixed recovery stress, and mechanical tension is not needed, prestressing force can produce by thermal excitation, it is easy to operate effective, simultaneously
NiTiNb shape-memory alloy wire also has high damping, and energy dissipation capacity is strong, therefore can rise to the promotion of structural seismic performance
To vital effect.
Detailed description of the invention
Fig. 1 uses structural schematic diagram for of the invention；
Fig. 2 is the schematic diagram of the connection fracture reinforcing bar 9 of sleeve extruding connector 2；
Fig. 3 is sectional schematic diagram of the invention；
Fig. 4 is the connection figure of NiTiNb shape-memory alloy wire 5 and external thermal excitation power-supply device 8.
Wherein, 1 it is damaged bridge pier, 2 be sleeve extruding connector, 3 be epoxy resin layer, 4 be accelerated cement base mortar, 5 is
NiTiNb shape-memory alloy wire, 6 be carbon cloth, 7 be steel plate press strip, 8 be external thermal excitation power-supply device, 9 be fracture steel
Muscle.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
Referring to figs. 1 to Fig. 4, the damaged bridge pier mixed reinforcement of the present invention based on marmem and carbon cloth
Structure include for connect in damaged bridge pier 1 be broken reinforcing bar 9 sleeve extruding connector 2 and for replace fill up damaged bridge pier 1
The loose concrete of surrounding and the accelerated cement base mortar 4 for repairing damaged 1 surface crack of bridge pier, the pier shaft table of damaged bridge pier 1
Face is disposed with epoxy resin layer and carbon cloth 6 from inside to outside, and the bottom of damaged bridge pier 1 is fixed with for compressing carbon fiber
The steel plate press strip 7 of cloth 6, the outer surface of carbon cloth 6 are wound with NiTiNb shape-memory alloy wire 5, in construction, NiTiNb shape
Shape memory alloys silk 5 is connected with the external thermal excitation electricity of the shape memory effect for activating NiTiNb shape-memory alloy wire 5
Source device 8.
Carbon cloth 6 is from the outer wall that the bottom end of damaged bridge pier 1 is wound in damaged bridge pier 1 axially upward, and carbon fiber
The winding height of cloth 6 is the 1/3 of damaged 1 height of bridge pier；Steel plate press strip 7 is fixed by bolts in the bottom of damaged bridge pier 1；
NiTiNb shape-memory alloy wire 5 is helically wound around the outside of carbon cloth 6 with 40 millimeters of spacing.
Implementation process of the invention are as follows:
1) concrete loose around damaged bridge pier 1 is removed；
2) it corrects curved longitudinal reinforcement and is connected using sleeve extruding connector 2 by reinforcing bar 9 is broken；
3) concrete of removal is replaced using accelerated cement base mortar 4 and repair the crack on damaged 1 surface of bridge pier；
4) epoxy resin layer is smeared on damaged 1 surface of bridge pier, and carbon cloth 6 is pasted onto damaged 1 surface of bridge pier；
5) it by 5 spiral winding of NiTiNb shape-memory alloy wire to column affected area, and is set using external thermal excitation power supply
Standby 8 activation NiTiNb SMA shape memory effect.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (4)
1. a kind of damaged bridge pier mixed reinforcement structure based on marmem and carbon cloth, which is characterized in that including with
It is all in connecting the sleeve extruding connector (2) for being broken reinforcing bar (9) in damaged bridge pier (1) and filling up damaged bridge pier (1) for replacement
Enclose the accelerated cement base mortar (4) of loose concrete and damaged bridge pier (1) surface crack of reparation, the pier of damaged bridge pier (1)
Body surface is disposed with epoxy resin layer and carbon cloth (6) from inside to outside, and the bottom of damaged bridge pier (1) is fixed with for pressing
The steel plate press strip (7) of tight carbon cloth (6), the outer surface of carbon cloth (6) are wound with NiTiNb shape-memory alloy wire (5),
In construction, NiTiNb shape-memory alloy wire (5) is connected with for activating the shape of NiTiNb shape-memory alloy wire (5) to remember
Recall the external thermal excitation power-supply device (8) of effect.
2. the damaged bridge pier mixed reinforcement structure according to claim 1 based on marmem and carbon cloth,
It being characterized in that, carbon cloth (6) is wound on the outer wall of damaged bridge pier (1) axially upward from the bottom end of damaged bridge pier (1), and
The winding height of carbon cloth (6) is the 1/3 of damaged bridge pier (1) height.
3. the damaged bridge pier mixed reinforcement structure according to claim 1 based on marmem and carbon cloth,
It is characterized in that, steel plate press strip (7) is fixed by bolts in the bottom of damaged bridge pier (1).
4. the damaged bridge pier mixed reinforcement structure according to claim 1 based on marmem and carbon cloth,
It is characterized in that, NiTiNb shape-memory alloy wire (5) is helically wound around the outside of carbon cloth (6) with 40 millimeters of spacing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019211178063 | 2019-07-16 | ||
| CN201921117806 | 2019-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110359379A true CN110359379A (en) | 2019-10-22 |
Family
ID=68222242
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910696402.2A Pending CN110359379A (en) | 2019-07-16 | 2019-07-30 | Damaged bridge pier mixed reinforcement structure based on marmem and carbon cloth |
| CN201921219577.6U Active CN210420905U (en) | 2019-07-16 | 2019-07-30 | Seismic damage pier mixed reinforcement structure based on shape memory alloy and carbon fiber cloth |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921219577.6U Active CN210420905U (en) | 2019-07-16 | 2019-07-30 | Seismic damage pier mixed reinforcement structure based on shape memory alloy and carbon fiber cloth |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN110359379A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111519533A (en) * | 2020-04-28 | 2020-08-11 | 东南大学 | Cable HDPE anti-cracking sheath with shape memory alloy wire clamped inside and preparation method thereof |
| CN113152791A (en) * | 2021-04-08 | 2021-07-23 | 扬州大学 | Combined column and construction method thereof |
| CN114481869A (en) * | 2022-02-25 | 2022-05-13 | 青岛理工大学 | Method for rapidly resisting earthquake and reinforcing pier |
| CN115075474A (en) * | 2022-06-29 | 2022-09-20 | 扬州大学 | Aggregate column and manufacturing method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359379A (en) * | 2019-07-16 | 2019-10-22 | 西安建筑科技大学 | Damaged bridge pier mixed reinforcement structure based on marmem and carbon cloth |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060084174A (en) * | 2005-01-19 | 2006-07-24 | 안숙희 | Reinforced system for column structure using shape memory alloy plate or wire |
| KR100622390B1 (en) * | 2005-07-25 | 2006-09-11 | 안숙희 | Reinforced system for column structure using steel plate and shape memory alloy strip or band |
| CN202482780U (en) * | 2012-03-01 | 2012-10-10 | 陈兴冲 | Carbon fiber anti-seismic structure for reinforcing bridge pier |
| CN202519576U (en) * | 2012-04-06 | 2012-11-07 | 山东大学 | External prestressing reinforcing device for pier body |
| CN205077890U (en) * | 2015-10-14 | 2016-03-09 | 西安建筑科技大学 | Reinforced (rfd) ancient building dowel fourth of twelve earthly branches node of embedding shape memory alloy stromatolite carbon cloth |
| CN210420905U (en) * | 2019-07-16 | 2020-04-28 | 西安建筑科技大学 | Seismic damage pier mixed reinforcement structure based on shape memory alloy and carbon fiber cloth |
-
2019
- 2019-07-30 CN CN201910696402.2A patent/CN110359379A/en active Pending
- 2019-07-30 CN CN201921219577.6U patent/CN210420905U/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060084174A (en) * | 2005-01-19 | 2006-07-24 | 안숙희 | Reinforced system for column structure using shape memory alloy plate or wire |
| KR100622390B1 (en) * | 2005-07-25 | 2006-09-11 | 안숙희 | Reinforced system for column structure using steel plate and shape memory alloy strip or band |
| CN202482780U (en) * | 2012-03-01 | 2012-10-10 | 陈兴冲 | Carbon fiber anti-seismic structure for reinforcing bridge pier |
| CN202519576U (en) * | 2012-04-06 | 2012-11-07 | 山东大学 | External prestressing reinforcing device for pier body |
| CN205077890U (en) * | 2015-10-14 | 2016-03-09 | 西安建筑科技大学 | Reinforced (rfd) ancient building dowel fourth of twelve earthly branches node of embedding shape memory alloy stromatolite carbon cloth |
| CN210420905U (en) * | 2019-07-16 | 2020-04-28 | 西安建筑科技大学 | Seismic damage pier mixed reinforcement structure based on shape memory alloy and carbon fiber cloth |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111519533A (en) * | 2020-04-28 | 2020-08-11 | 东南大学 | Cable HDPE anti-cracking sheath with shape memory alloy wire clamped inside and preparation method thereof |
| CN113152791A (en) * | 2021-04-08 | 2021-07-23 | 扬州大学 | Combined column and construction method thereof |
| CN114481869A (en) * | 2022-02-25 | 2022-05-13 | 青岛理工大学 | Method for rapidly resisting earthquake and reinforcing pier |
| CN115075474A (en) * | 2022-06-29 | 2022-09-20 | 扬州大学 | Aggregate column and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN210420905U (en) | 2020-04-28 |
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